import java.util.*;

/**
 * Created by ScorpionOrange on 2016/11/03.
 */
public class MapTest {
    public static void main(String[] args){
        Map<String, Employee> staff = new HashMap<>();
        staff.put("144-25-5464", new Employee("Amy Lee"));
        staff.put("567-24-2546", new Employee("Harry Hacker"));
        staff.put("157-62-7935", new Employee("Gary Cooper"));
        staff.put("456-62-5527", new Employee("Francesca Cruz"));

        // print all entries
        System.out.println(staff);

        // remove an entry
        staff.remove("567-24-2546");

        //replace an entry
        staff.put("456-62-5527", new Employee("Francesca Miller"));

        // look up a value
        System.out.println(staff.get("157-62-7935"));

        // iterate through all entries
        for(Map.Entry<String, Employee> entry : staff.entrySet()){
            String key = entry.getKey();
            Employee value = entry.getValue();
            System.out.println("key = " + key + ", value = " + value);
        }
    }
}
